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https://issues.apache.org/jira/browse/HADOOP-12548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14994227#comment-14994227
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Steve Loughran commented on HADOOP-12548:
-----------------------------------------
There's confusion here.
# Java sysprops. Set with {{-Dkey=value}}, must be on the CLI before the actual
main classname to load. Can usually be set in whatever ENV var lets you set
options for that exe.
# Hadoop toolrunner definitions. Set with {{-D key=value}}. Note the space?
Must come *after* the classname. Any entry point built on {{ToolRunner}} get
this —these are the ones automatically set into the Configuration instance
loaded by that tool (and not to others in the JVM, incidentally). —that is,
provided the proption perty can be overridden
> read s3 creds from a Credential Provider
> ----------------------------------------
>
> Key: HADOOP-12548
> URL: https://issues.apache.org/jira/browse/HADOOP-12548
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs/s3
> Reporter: Allen Wittenauer
> Assignee: Larry McCay
> Attachments: CredentialProviderAPIforS3FS.pdf
>
>
> It would be good if we could read s3 creds from a source other than via a
> java property/Hadoop configuration option
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